Liquid flow meter
US4848164A · kind A · utility
45Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | May 27, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F3/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid flow meter of the type having a positive displacement rotatable member responsive to liquid flow, with a permanent magnet affixed to the rotatable member. A magnetically-operable reed switch is located proximate the reed switch, but outside the liquid flow housing, and battery-operated circuits accumulate counts of reed switch closures, and display the counts in units representative of liquid flow volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.